DC-DC CONVERTERS

F Class Non-isolated

1

NEW Product

File Name: smt12f_05.pdf Rev (03): 16 Dec 2005

2 YEAR WARRANTY

All specifications are typical at nominal input, full load at 25 °C unless otherwise stated.

External output capacitance required (See Note 4)

SPECIFICATIONS

The SMT12F series is a new range of ultra-compact non-isolated point-of-load converters for

space-critical applications. The new SMT12F Typhoon™ family surface-mount converter has a

footprint of just 13.5 x 16 mm - and unlike competitive products on the market, requires only

the addition of a small number of ceramic output capacitors to realise a complete high-

performance point-of-load (POL) solution. The SMT12F is primarily intended for use on very

densely packed, high functionality boards and for powering advanced silicon including network

and communication processors, DSPs, FPGAs and ASICs. A key advantage of the SMT12F is

that it only needs the addition of five 22 µF ceramic output capacitors to provide a complete

full-specification, high efficiency POL solution with transient response capabilities that extend

up to 300 A/µs. The total board space required for the module and capacitors is a mere 300

up to 300 A/µs step load transients

or tighter card pitch is required

SMT12F Series

3.3 Vin and 5 Vin single output

OUTPUT SPECIFICATIONS

Voltage adjustability

5.0 Vin

0.9-3.3 Vdc

Wide trim (See Note 6)

3.3 Vin

0.9-2.6 Vdc

Setpoint accuracy

±0.5% typ.

Line regulation

±1.0% typ.

Load regulation

±1.0% typ.

Total error band

±3.0% typ.

Minimum load

0 A

Overshoot/undershoot

None

Ripple and noise

5 Hz to 20 MHz

40 mV pk-pk

(See Note 5)

25 mV rms

Temperature co-efficient

±0.01%/ºC

Transient response

di/dt 300 A/µs

12 A load step

(Vout = 3.3 V)

100 mV deviation

<15 µs settling time to

within ±1.0%

Remote sense

10% Vo compensation

INPUT SPECIFICATIONS

Input voltage range

5 Vin

3.0-5.5 Vdc

(See Note 6)

3.3 Vin

2.97-3.63 Vdc

Input current

No load

100 mA

Input current (max.)

8.5 A max. @ Io max.

and Vout = 3.3 V

Input reflected ripple

100 mA rms

Remote ON/OFF

(See Note 1)

Start-up time

15 ms

EMC CHARACTERISTICS

Electrostatic discharge

EN61000-4-2, IEC801-2

Conducted immunity

EN61000-4-6

Radiated immunity

EN61000-4-3

GENERAL SPECIFICATIONS

Efficiency

5 Vin

95% typ.

3.3 Vin

92% typ.

Insulation voltage

Non-isolated

Switching frequency

600 kHz

Approvals and

EN60950

standards

UL/cUL60950

Material flammability

UL94V-0

Dimensions

(LxWxH)

16.00 x 13.46 x 7.93 mm

0.63 x 0.52 x 0.31 inches

Weight

3 g (0.11 oz)

Coplanarity

100 µm

MTBF

Telcordia SR-332

10,000,000 hours

ENVIRONMENTAL SPECIFICATIONS

Thermal performance

Operating ambient,

-40 ºC to +85 ºC

(See Note 2)

temperature

Non-operating

-40 ºC to +125 ºC

PROTECTION

Short-circuit

Continuous

Thermal

Automatic recovery